Voltage regulation description: Automatic voltage regulation (AVR) maintains line power operation with an input voltage range of 83 to 145VOvervoltage correction: Input voltages between 127 and 145V are reduced by 12% Undervoltage correction: Input voltages between 108 and 96V are boosted by 14%Severe undervoltage correction Input voltages between 83 and 95 are boosted by 24%